Saw-setting tool.



L. G. MoKAM. SAW SETTING TOOL. APPLICATION rum) sum-.19, 100a.

Patented Oct. 12, 1909.

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Annmmu L. G. MOKAM. SAW SETTING TOOL. APPLICATION FILED SBPT.1'9, 190s.

I LAWRENCE G. McKAM, 0F. DETROIT, MICHIGAN.

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Specification of Letters Patent.

Patented 0a. 12, 1909.

Application filed September 19,1908. Serial No. 453,796.

To all whom it may concern:

Be it known that I, LAWRENCE Gr. MoKAM, a citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvementin Saw-Setting Tools, and declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to saw setting tools.

It has for its object an improved 'saw setting tool adapted to be set on the toothed edge of a saw, and to set the teeth in consecutive order, and the set is caused to travel along the edge of the saw and to be. adjusted to set the teeth in both directions (the consecutive teeth in opposite directions) without changing the tool, but merely adjusting the tool. y

In the drawings :-Figure 1, is a vertical section. Fig. 2, is an elevation. Fig. 3, is a detail of cam shown in elevation in Fig. 1. Fig. 4, is an end elevation. Fig. 5, is a plan view. Fig. 6, is a detail, showing an interlocking feed of the anvil and the swage blocks. Fig. 7 shows the form of tooth produced. a j

The tool consists of a main block or body 1, in which is held an anvil 2, and a movable swage block or setting block 3. The anvil 2 engages through a bushing 4, through which it can reciprocate without turning. The

, bushing is held in place by a set screw 5,

and is adjustably held in place in its longitudinal position in the bore of theblock 1 by an adjusting screw 6 that is screwed into the end of the block, and formsan abutment for the anvil block 2. The adjusting screw 6 is perforated, and a stem 7 of the anvil block engages through the perforation and terminates on its outer end with a wrench hold 8 by means of which the stem and the anvil and the bushing may be turned on the longitudinal axis of the stem to adjust the anvil to its proper relation for the work to be done. Before this adjustment is made, the set screw 5 is loosened, and after the adjustment has been made, the set screw 5 is tightened to hold the anvil block and the bushing in its proper adjusted position. On the opposite end of the body block, but in continuation with the bore of the block in which the anvil engages, is a bore in which engages a bushing 9, and within the bushing 9, is a movable swage block 3 held from rotating by a feather, which engages in a long the swage block 3 extends through the central hole along the axis of the screw 11, and terminates beyond the end of the screw 11 with a wrench hold 13, by means of which the stem 12, the swage block 3, and the bushing 9, may be turned on the longitudinal axis of the stem 12 to bring the swage block into proper relation with the anvil block for the work to be done. The-inner or swage face of the swage block 3 is provided with a pin hole 14, and the inner or swage face of the anvil block 2 is provided with a pin 15, which engage when the swage block is brought up strongly against the saw 29 interposed between it and the anvil.

By referring to Fig. 4, where the outline of the anvil block and the swage block are seen, it would be seen that only a little over one-fourth of the face of the swage block, or of the anvil block, engage against the tooth of the saw 29 and the end of the anvil block, and the end of the swage block may be properly shaped on the one quarter thereof, to give to a tooth a right hand set, and on another quarter thereof to give to the tooth a left hand set, and at still another place where it will not interfere with the operation in either direction may be located the pin 15 in the hole 14.

a The protruding end of the screw 11 is provided with a slabbed olf crank hold 17, and the screw actuating the swage block is itself actuated by a hand crank 18.

The body block of the tool is brought to its proper position with reference to the tooth by guides, one of which is found in the slot 19, which crosses the guide block, and extending into it to the proper depth to allow the tool to clear the tooth as it travels therealong.

At the front of the tool is a bracket arm 21, which sustains, adjustably connected with it, a rest or guide 22, held to the bracket arm 21 by thumb screw 23, which passes through the bracket through a long'slot" 21 in the guide, and through-IassuitableawasherI 26. The lower end of the guide 22 provided with a foot 27, which engagesunder 5 the tooth a and against the tooth Z), whereas" teeth, giving to the tool an adjustment in this respect, which regulates the tool along "the'axis'of" the saw,'29, keeping itjparallel b'oth'to theface o'f thesaw and to' the lines passing along'the points of'the teeth. At the'reaig'the tool'is supported by a rearwardly projecting rest 28, which curves in U-formfrom an end of the body of the tool to ZL' PQSllZlOII somewhat to the rear thereof, and servesto holdthetool inproper posi- "ti'onfor its 'proper action upon the end of the tooth. 'The'tool is itself'temporarily clampedito" the saw'byahand actuated cam 30"hun gp0n 'ajvertical rod 31, and actuated "by short crank: arm 32," by: means of which itmay "be partially turned on its vertical flaxis'an'd brought into gripping engagement with the'side ofthe'saw, which is held beltweenthe cam 'andthe face of the slot'19, which; lies opposite the cam.

' "In uset this tool'is set with" the swages to "form the tooth j'properly "in "one direction,

'e'ither to the right or" the left, andfthe saw is set by operating on each alternate tooth throughout its. extent. "The anvil" block and 'swage block are then reversed, and the tool "againrun over the saw, setting those teeth Vith this tool the iesasoo the rear end of said anvil member and through the 'body'of said screw, whereby the anvil may be rotated, a movable swage block *en'garg in'g within the portion of the bore not occupied by said anvil member, and block having *a complementary working I face to that of said.anvilmember, and being held from rotation with respect to the body block by the engagement of aprojecting feather .portion within a corresponding cut-away portion of the mass of the bodyblock, and 'anactuatin-g screwpassing through a complementarily threadedportion of the body block, and having a swiveled connection with said anvil block, whereby it may be projected against a saw tooth interposed between it and said anvil memberand subsequently positively retracted from such position, substantially as described. 2. In-a'saw setting tool, in combination with a bodyblock, an.anvil and a setting punch located within the cylindrically bored portion thereof and held from undesired rotation-with respect thereto though capable of movement along their common longitudinal. axis, an adjusting screw whereby the anvil is adjusted to and held in the exact position desired,the central; portion of said adjusting screw being aperturedfor the. engagement'therethrough of a projecting portion of the anvil for purposes of rotative adjustment,'whereby the working face of the-anvil may be adjusted to'the desired positionwith.respect" to the body blockan'd to the setting e. punch an actuating screw for'the setting;punch,.having a swivele'd connection therewith, whereby it may be projected or retracted alongits lol'igitudinal axis, a guide bracket, extending to the front ofthe body block and having an. adjustable guide thereon, anda guide arm extending to the rear'thereof, substantially as described.

.In testimony whereof, 'I sign this speci- Tfication in the presence of two witnesses.

' LAVVRENCE Gr. MOKAM.

\Vitnesses CHARLES F. BURTON, T WILLIAM M. SWAN. 

